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Applications of asynchronous deep reinforcement learning based on dynamic updating weights

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Abstract

Deep reinforcement learning based on the asynchronous method is a new kind of reinforcement learning. It takes a multithreading way to enable multiple agents to update the parameters asynchronously in different exploration spaces. In this way, agents no longer need experience to reply and can update parameters online. At the same time, the asynchronous method can greatly improve the convergence speed of the algorithms and significantly improve the convergence performance of the algorithms. Asynchronous deep reinforcement learning algorithms, especially asynchronous advantage actor-critic algorithm, are very effective in solving practical problems and have been widely used. However, in existing asynchronous deep reinforcement learning algorithms, when each thread pushes updates to the global thread, it adopts a uniform learning rate, and fails to take account of the different information transmitted by different threads at each update. When the update of the agent to global thread is more biased towards failure information, it has no obvious help to update the parameters of the learning system. Therefore, we introduce the dynamic weights to asynchronous deep reinforcement learning algorithms and propose a new reinforcement learning algorithm named asynchronous advantage actor-critic with dynamic updating weights (DWA3C). When the information pushed by an agent is obviously helpful for the improvement of the system performance, we will enhance the update range, otherwise, we will weaken that. In this way, we can significantly improve the convergence efficiencies and convergence performances of the asynchronous deep reinforcement learning algorithms. And we also test the effectiveness of the algorithm through experiments. The experimental results show that, in the same running time, the proposed algorithm can significantly improve the convergence efficiency and convergence performance compared with the existing algorithms.

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Acknowledgements

This work is supported by the Fundamental Research Funds for the Central Universities(No.2017XKZD03).

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Authors and Affiliations

  1. School of Computer Science and Technology, China University of Mining and Technology, Xuzhou, 221116, China

    Xingyu Zhao, Shifei Ding & Yuexuan An

  2. School of Information Science and Engineering, Shandong Normal University, Jinan, 250358, China

    Weikuan Jia

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  1. Xingyu Zhao
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  2. Shifei Ding
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  3. Yuexuan An
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Correspondence to Shifei Ding.

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Zhao, X., Ding, S., An, Y. et al. Applications of asynchronous deep reinforcement learning based on dynamic updating weights. Appl Intell 49, 581–591 (2019). https://doi.org/10.1007/s10489-018-1296-x

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